/Engine/Source/Editor/UnrealEd/Public/Kismet2/KismetDebugUtilities.h
Notifies listeners when a watched pin is added or removed.
static [FOnWatchedPinsListChanged](API\Editor\UnrealEd\Kismet2\FKismetDebugUtilities\FOnWatchedPinsListChanged) WatchedPinsListChangedEvent;